dnl Process this file with autoconf to produce a configure script.

AC_INIT(Frodo, 4.2, [Christian.Bauer@uni-mainz.de], Frodo)
AC_CONFIG_SRCDIR(main.cpp)
AC_PREREQ(2.52)
AC_CONFIG_HEADER(sysconfig.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_MAKE_SET
AC_PROG_INSTALL

dnl -fomit-frame-pointer makes things faster
if [[ x"$GXX" = "xyes" ]]; then
  CFLAGS="$CFLAGS -fomit-frame-pointer -fno-exceptions"
fi

AC_AIX
AC_ISC_POSIX

dnl Checks for libraries.
AC_CHECK_LIB(vga, vga_setmode, HAVE_SVGA_LIB=yes, HAVE_SVGA_LIB=no)
AM_PATH_SDL(1.2.0, HAVE_SDL=yes, HAVE_SDL=no)
HAVE_GLADE=no
PKG_CHECK_MODULES(GLADE, libglade-2.0 libgnomeui-2.0 >= 1.110.0, HAVE_GLADE=yes)
if [[ $HAVE_GLADE = yes ]]; then
  AC_DEFINE(HAVE_GLADE, 1, [Glade support is enabled])
fi

AC_PATH_XTRA

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/types.h utime.h string.h strings.h values.h ncurses.h)
AC_CHECK_HEADERS(sys/vfs.h sys/mount.h sys/select.h sys/param.h sys/statfs.h sys/statvfs.h sys/stat.h)

dnl Checks for types.
AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_STRUCT_ST_BLOCKS
AC_HEADER_TIME
AC_STRUCT_TM

dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_FUNC_UTIME_NULL
AC_CHECK_FUNCS(gettimeofday sigaction mkdir rmdir select strerror strstr statfs usleep)

KBD_LANG=0
AC_ARG_ENABLE(kbd-lang-de,[  --enable-kbd-lang-de    Use german keyboard layout],[KBD_LANG=1],[])
AC_ARG_ENABLE(kbd-lang-us,[  --enable-kbd-lang-us    Use american keyboard layout],[KBD_LANG=0],[])

AC_MSG_CHECKING(which target to use)
if [[ x"$no_x" = "xyes" ]]; then
  if [[ x"$HAVE_SVGA_LIB" = "xyes" ]]; then
    AC_MSG_RESULT([SVGAlib])
    TARGET=svgalib
    CFLAGS="$CFLAGS -D__svgalib__"
    LIBS="$LIBS -lvga"
  else
    AC_MSG_RESULT([Ummm...])
    AC_MSG_ERROR([Neither X nor SVGAlib found, don't know what target to use.])
  fi
elif [[ x"$HAVE_SDL" = "xyes" ]]; then
  AC_MSG_RESULT([SDL])
  TARGET=sdl
  CFLAGS="$CFLAGS $SDL_CFLAGS -DHAVE_SDL"
  LIBS="$LIBS $SDL_LIBS"
else
  AC_MSG_RESULT([X Window System])
  TARGET=x11
  CFLAGS="$CFLAGS $X_CFLAGS -I$ac_cv_x_include"
  LIBS="$LIBS $X_LIBS $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS"
fi

AC_SUBST(TARGET)
AC_SUBST(SET_MAKE)
AC_SUBST(top_srcdir)
AC_SUBST(HPUX_REV)
AC_SUBST(KBD_LANG)

dnl Generate Makefile.
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

dnl Print summary.
echo
echo "Configuration done. Now type \"make\"."